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METHOD:PUBLISH
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 13
SUMMARY:Reduction of dust content in sinter plant waste gas by reducing chloride load to the system
DESCRIPTION:Chloride in sinter comes from raw materials including iron ores, reverts, Coke breeze and fluxes. Taking into account the thermo-chemical properties of the chloride compounds, sinter product contains less chloride (~20%), but gets accumulated to a greater extent in the waste gas dust.  As the waste gas dust (ESP dust) is reused in the process, progressively chlorine enrichment happens. Literature suggests, the alkaline chloride raises the electric specific resistance of dust surface and thereby decreases the electrostatic precipitator (ESP) performance. With continuous increase in the chloride value of dust, ESP performance deteriorates, thereby increasing the dust content in the stack gas. Chloride level increases with field number of ESP as more finer and more chlorine concentrated dust is captured in the last fields. Alkali –K2O & Na2O follows the same trend: more alkali in the final field as alkali remains mainly with finer dust (Cl remains mostly as alkali chloride). To combat the chloride effect there is a study and a trial taken to lessen chloride input to the system by evacuating the “most concentrated” ESP dust of last field and breaking the enriching chloride cycle. Study shows that weekly or in certain frequency bleeding of the last of  field dust for a day will help to reduce the chloride load . Our observations shows with this initiative, there is a significant amount of reduction in dust content in stack gas. To reutilize the dust, cleaning this extracted dust is also carried which shows very promising result.
CLASS:PUBLIC
DTSTART:20230615T113000
DTEND:20230615T115000
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